3 . ①Have you ever seen a self-driving car? Have you ever wondered how an iPhone’s face recognition (人脸识别) works?

②All of these technologies have something in common: they use artificial intelligence (人工智能), or “AI”. AI is already all around us, and millions of people are using artificial intelligence every day. Even if you have used AI before, you might not know exactly how it works.

③ “AI” is defined as (被定义为) the ability for a computer to think and learn like people do. With AI, computers can finish tasks like people, including processing language, problem-solving, and learning.

④If you have ever watched a video on YouKu or DouYin, for example, you may have noticed that you will receive recommendations (推荐) for other videos based on (基于) what you already watched. That’s because of AI!

⑤Most people use search engines (搜索引擎) like Google and Baidu every day. Search engines use AI to rank (排名) websites in your search results to help you find the most useful websites for you.

⑥Even though AI is already used a lot today, computer scientists predict artificial intelligence will be even more popular in the future. Because of this, many jobs will also need us to understand how Al works so we can solve big problems.

1. Which of these is not an example of how AI is used today? ________.

A．to help students talk to teachers	B．to recommend new videos to watch
C．to open a cellphone with your face	D．to drive a car without a driver

2. “Processing language” here most likely means ________.

A．listening to a new language	B．understanding language
C．speaking a language	D．reading a language

3. What does “AI” stand for (代表)? ________.

A．All Intelligence	B．Alternate Internet
C．Artificial Intelligence	D．Artistic Inspiration

4. Which parts of the article are the main ideas? ________.

A．① and ②

B．③ and ⑥

C．⑤ and ⑥

D．② and ⑤

5 . 根据下面短文内容，在短文的空格处填上一个恰当的词，使短文完整、通顺。每空一词，含缩略词。

China is the third biggest country in the world. Everyone who is interested in this great country might have already visited places such     1     Beijing, Shanghai or Chongqing. But where exactly is Wanzhou? What actually is Wanzhou?

Wanzhou is the second largest district (行政区) in Chongqing     2     about one million people in the city and around 800 thousand people in the     3     . Wanzhou is not only     4     for its delicious food, like cold noodles or baked fish, but also for special tourist spots, like the widest waterfall in Asia. Wanzhou is always worth the trip.

Wanzhou is a little far from most of the other districts, but the high speed train just needs about one hour and 20 minutes to Chongqing city. Wanzhou gives you almost     5     you need in your daily life. Wanzhou has a lot to entertain (娱乐) everyone. It does not matter whether you are young     6     old. You will find the young people in the shopping malls, gyms or food courts, the older generations (代) on big squares dancing and in the teahouse     7     cards or Mahjong. It might be a little noisy, but it is     8     boring.